Diodes Incorporated 74AHC1G86W5-7

Overview

74AHC1G86W5-7 from Diodes Incorporated is a single 2-input positive-exclusive-OR gate in SOT25 package, operating from 2.0V to 5.5V supply, delivering ±8 mA output drive at 5.0V, with Schmitt-trigger inputs for noise immunity, and CMOS low-power consumption. It implements the Boolean function Y = A ⊕ B and is used in logic-level signal comparison, parity generation, and digital waveform shaping in portable consumer electronics.

For engineers reviewing the 74AHC1G86W5-7 datasheet, 74AHC1G86W5-7 pinout, 74AHC1G86W5-7 application, or 74AHC1G86W5-7 equivalent, key selection considerations include input hysteresis tolerance, propagation delay under 8.5 ns at 5V/50pF, rail-to-rail output swing, ESD robustness (2 kV HBM), and SOT25 footprint compatibility in space-constrained PCB layouts.

Technical Context

The 74AHC1G86W5-7 implements a true XOR logic function with push-pull CMOS outputs and Schmitt-trigger inputs-enabling reliable operation with slow-rising or noisy signals. Its dual-voltage capability (2.0–5.5V) supports mixed-supply system interfacing, including 3.3V microcontroller I/O and 5V legacy peripherals.

Designed for low static power (ICC ≤ 40 µA at 5.5V), it achieves propagation delays as low as 0.6 ns (typical) and up to 8.5 ns (max, –40°C to +125°C) into 50 pF load. Input clamp current (±20 mA) and latch-up immunity (>100 mA per JESD78 Class II) ensure robustness in transient-prone environments.

Key Specifications

Pinout & Package

SOT25 (5-pin, 1.6 mm × 2.8 mm × 1.1 mm) surface-mount package with gull-wing leads, RoHS-compliant lead-free finish, and green molding compound (no Br/Sb).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar XOR gate applications.

Compared with SN74LVC1G86DBVR and 74AUP1G86GW,125, the 74AHC1G86W5-7 uniquely balances 5V compatibility, Schmitt-trigger noise immunity, and moderate drive strength-making it optimal for mixed-voltage industrial controls and portable consumer interfaces where signal integrity and footprint efficiency are jointly critical.

Availability

74AHC1G86W5-7 is available at Aetrix Electronics and suitable for portable computing, automotive infotainment head units, and industrial HMI panels requiring stable component supply, consistent SOT25 packaging, and long-term lifecycle support.

Supply support for 74AHC1G86W5-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.

The 74AHC logic family targets general-purpose, low-power, wide-supply-voltage digital interfacing-designed specifically for robust operation in mixed-signal embedded systems with variable rail conditions.

FAQ

Can the 74AHC1G86W5-7 operate reliably at 2.0V supply?

Yes. The device is fully specified down to 2.0V: VIH(min) = 1.5V, VIL(max) = 0.5V, and tPD ≤14.0 ns (CL = 50 pF, –40°C to +125°C). Output drive remains functional at ±0.5 mA, sufficient for light capacitive loads and high-impedance inputs in ultra-low-voltage sensor nodes.

Is a pull-up or pull-down resistor required on unused inputs?

Yes. Per datasheet Note 3, unused inputs must be tied to VCC or GND to prevent floating states that increase ICC and cause erratic output switching. Leaving inputs unconnected risks oscillation, excessive current draw (>100 µA), and potential damage due to undefined internal node biasing.

What is the thermal resistance of the SOT25 package?

The SOT25 package has θJA = 195°C/W (on FR-4, 2 oz copper, minimum pad layout) and θJC = 58°C/W. At 8 mA output current and 5.5V supply, worst-case power dissipation is ~44 mW, resulting in <9°C junction-to-ambient rise-well within the –40°C to +150°C TJ rating.

Does the Schmitt-trigger input affect propagation delay?

No-the datasheet specifies tPD values measured with standard input waveforms (tr/tf ≤3 ns), and Schmitt action only affects input threshold hysteresis (typically 0.3–0.5 V), not gate delay. Delay remains dominated by internal CMOS structure and load capacitance, with no added latency from hysteresis.